Walnut Creek Auto Repair

Yearly Archives: 2025

Why Is My Tire Losing Pressure Without a Puncture?

Why Is My Tire Losing Pressure Without a Puncture?

You check your tires, and one of them keeps losing air—but there’s no visible puncture. It’s frustrating, right? A slow drop in tire pressure without an obvious cause can be puzzling and even dangerous if left unchecked. While most drivers immediately think of a nail or screw lodged in the rubber, there are actually several other reasons your tires might be deflating. Identifying the cause early can help prevent a flat tire, improve fuel efficiency, and keep you safe on the road. Temperature Fluctuations and Air Loss One of the most common, yet least concerning, reasons for tire pressure loss is changing temperatures. As the air inside your tires heats up or cools down, it expands and contracts. This is especially noticeable during seasonal shifts or when you park your car outside overnight. For every 10-degree drop in temperature, tire pressure can decrease by about 1-2 psi. If you’ve noticed that your tire seems fine during the day but lose ... read more

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